31400232644 has 24 divisors (see below), whose sum is σ = 59955069888. Its totient is φ = 14270649440.

The previous prime is 31400232631. The next prime is 31400232659. The reversal of 31400232644 is 44623200413.

It is a super-2 number, since 2×31400232644² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256154 + ... + 358350.

It is an arithmetic number, because the mean of its divisors is an integer number (2498127912).

Almost surely, 2^31400232644 is an apocalyptic number.

It is an amenable number.

31400232644 is a deficient number, since it is larger than the sum of its proper divisors (28554837244).

31400232644 is a wasteful number, since it uses less digits than its factorization.

31400232644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109195 (or 109193 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The spelling of 31400232644 in words is "thirty-one billion, four hundred million, two hundred thirty-two thousand, six hundred forty-four".